Public support for v3 has not yet been released. If you have early hardware, please submit an issue requesting NDA support. Watch for public support in a future update.
I believe it was a timing issue. The processor was launched after our 2015 gold bits were built. We have to wait for the processor to be publicly available before we can *release* a build that supports it. Thus, the release *after* launch is the one that supports a newly launched processor. I am verifying that with the team and will update this thread once I receive confirmation.